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UW Health SMPH
American Family Children's Hospital

UW Hospital and Clinics Lab Test Directory

Test Name: Prealbumin

Test Code(s): PREALB / XPRALB

CPT Code(s): 84134

Methodology: Immunoturbidimetry

Days Performed: Daily, 24 hours.

Turnaround Time: Stat: 1 hour.
Routine: 4 hours.

Specimen Requirements

Specimen: Blood

Collection Container: Preferred: Green cap with yellow ring (PST)
Also Acceptable: Green top, Red cap with yellow ring (SST), Red top

Collection Volume: Preferred: 1 mL
Pediatrics: 0.4 mL

Sample Analyzed: Plasma or serum

Volume Required: Preferred: 0.5 mL
Pediatrics: 0.2 mL

Specimen Processing: Centrifuge.  If a complete barrier has not formed, transfer cell-free plasma/serum to plastic vial within 2 hours of collection.  Refrigerate.

Specimen Transport: Transport specimen to laboratory. Transport with coolant pack if coming from outreach location.

Stability: Ambient: 8 hours
Refrigerated: 2 days
Frozen: For longer storage, specimens may be frozen at -20 or colder


Test Limitations:
Age: mg/dL
0-5 days 8.6-23.2
6 days-23 months 9.6-32.0
2-5 years 16.4-32.0
6-9 years 17.3-34.9
10-13 years 22.2-37.8

14-18 years


 19 years and up


Additional Information:

This protein is also known as transthyretin.


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